Internal-combustion engine



J. V. OSTERHOUT INTERNAL COMBUSTION ENGINE Filed May 2e, 1926* 28 1 6 l INVENTOR. L I' Un V @sier/L ou? Patented Oct. `2&9; 1929 UNITED srares PATENT oratori JOHN' v osrnnnour, o'nnrnenronr,

Application tiled Hay 26,4

This invention relates to an internal combustion engine, and an object of the invention is to provide an internal combustion engine having mechanism for insurin that 5 the explosive mixture fed to each cy inder of the engine can have the proper proportions 'ofy as and air.

A furt er object is to provide ad'ustable means for modifying the richness o an explosive mixture fed to a cylinder of an internal combustion engine.

A further object is to provide a separate mixing chamber for each cylinder of an internal combustion engine, and to. equip each mixin chamber with means for modifying the ric ness of an explosive mixture fed to the cylinder. 4 l

A further object is to provide a separate lmixing chamber for each cylinder of an iliternal'combustion engine, and to equip each mixing chamber with an adjustable air valve for modifying the richness of an explosivel mixture fed'to a cylinder independently of the mixture fed to all other cylinders.

A further object is to provide an internal combustion engine having a separate mixing chamber for each cylinder, which mixing ychamber has an ad'ustable compensating, equalizing or modi v ing valve or 4device adapted to be manipulated by the sucking action of a piston in the corresponding cylinder to insure that the explosive mixture fed to a cylinder will have the proper proportions of gas and air.

A further object-is to-provide each cylin-g der of an' internal combustion engine with a separate mixing chamber, and to provide each mixing chamber with an .adjustable compensating, equalizing, or modi ing'valve or device adapted to be opened reason of suction exerted by a piston in t e correspondin cylinder in such manner as to dilute a too ric mixture in said mixing chamber.

A further object is to provide an internal retor, cylinders having pistons, an intake manifold leading from the carburetor toward the cylinders, a lurality of'sepfarate mixin chambers all a apted to be communicate with by the intake manifold and each adapted Y intakemanifold and th l chamber communicates ternal combustion engine ami combustion engine which includes a carbustruction and arrangement of parts being CONNECTICUT; ELIZABETH K. OSTERHOUT LDHINISTBATRIX OF SAll) JOHN V. OSTERHOUT, DECE mrnnnancomncs'rrcn ENGINE ASED 192e. lserial no, 111,-751;

to communicate with a cylinder, and an air valve in each mixing chamber adapted to be opened by reason of suction exerted by l.a piston in the corresponding cylinder to dilute a too rich mixture in the mixing chamber. A further object is to/provide between the e cylinders of an orstion engine, a unifold compartments or mix' ing chambers, one for each cylinder and adapted to be communicated with 'b said intake manifold, and to provide in eac compartment or mixing chamber an inwardly opening check-valve adapted to be opened by suctlon exerted by a piston in acylinder with which said compartment or mixing dinary internal combu consisting of separate vstroke of said piston. l u

A further object is to provide check valves between each compartment or mixing chamber and said int? ke manifold.

A' further object is to provide' in the intake assage of an internal combustion engine a blow out valve -adapted to carefor back firing. s v `v`'Hi A further object is to provide in an in-y xing comparta be communiment or chamber adapted to cated with by an intake manifol l y ed to communicate with a cylinder, and to 89 provide in said compartment an inwardly opening valve adapted to allow entry of atmospheric air to said compartmentl ory chamber and an outwardly opening valve constis tuting a blow out for back liring. u

A further object is to provide a unique and simple air resistance device at the carburetor of the improved internal combustion engine. With-the above objects in view, as well as others which will appear as the specification proceeds, the invention comprises the construction, arrangement and combination o f `parts as-now to be fully described and as hereinafter to be specifically claimed, it being understood that the disclosure herein is merely illustrative and intended in no way in a limiting sense, changes in details of conper missible soy long as within the spirit of the 10 during the suction .invention and the scope ofthe appended claims.

In the accompanying. drawing forming a part of this specification, 1

Fig. 1 is a perspective view of an internal` 'combustion engine in which thev features of Fig. 1;

.merals of reference thereon,

the invention are incorporated;

Fig. 2 is an enlarged fragment view disclosing a part of anengine cylinder, a part ofthe intake manifold, and a compartment or mixing chamber of the engine of Fig. 3 is a fragmentary sectionaliview as on line 3--3 in Fig. 2; and

Fig. 4 is an enlarged fragmentary sectionalview of the air resistance device at the carburetor. y i

With respect to the drawing and the'nu- 10 represents, generally, an internal combustion engine, 11 the cylinders thereof, 12 the cylinder block having inlet passages 13, one to each cylinder,

x' each controlled by explosive mixture inlet valve 14. bNumeral 15 denotes, generally, a carburetor, and 16 indicates an intake manifold leading from the carburetor toward the cylinders.j All of the parts mentioned may be of ordinary or preferredv construction. As

disclosed, the carburetor includes ay .tubular at one end 18 andhaving 19 hinged in its side to provide resistance manifold via the member 17 closed inwardly opening 'doors walls as at 20, whereby to air entering the'intake doors in a manner which will be understood.

adjustment.

A ring 21 about the tubular member 17 has spaced openings 22v and is adapted to be manipulated to cover spaced openings 23 in to allow openings 22.

said tubular member vor I and 23 to completely or partially coincide, whereby toprovide` any desired carburetor The engine i although it could have a different number of to an outlet 28 of said inta cylinders.Y Numeral 24 represents what I prefer to style a .unifold. As disclosed, the

unifold is of oblongshapeand consists of four separate compartments or chambers 25 each communicating as at 26 with a passage 13 in the cylinder block and leading tow-ard a cylinder, and each beingI secured as at 27 e manifold. The

unifold may be secured upon the engine block Iin any ordinary or convenient manner Each .compartment orchamber is independent of all other compartments or chambers, 29 representing. walls between the compartments or chambers.

The inlet passage 30-of each compartment or chamber 25, which inlet pasage is in communication vwith an intake manifold outlet 28,`is provided withva check valve 31 adapted .n to allow entry of explosive mixture from the intake manifold to said compartment or chamber. As disclosed,y each valve 31 is adapted to be opened by vacuum created in ary sectional lvalve 37 normally disclosed has four cylinders,l

a cylinder uponthe intake stroke of a piston, although each valve 3.1 could `be positively operated in any convenient manner. `A stem 32 upon each valve 31 is slidable in aspider 33 within said passage30, and a coil spring 34 upon said stem and engaging said spider and a collar 35 upon the free end of said stem other air valves 37 so` that a cylinder can receive an explosive mixture having any desired proportions of gas and air. Each checkvalve 37 may be constructedv in any desired manner', the valveshown being satefjactory. Nu-

meral 38 indicates a tubular mber remove ably threaded as at 39` in the upper wallA 40 of each compartment or chamber 25, Said member 38 being within the compartnient'or chamber and having an air ninlet passage 41 terminating in`a cavity 42 in which the valve 37 is situated. As disclosed, the end of the cavity 42 spaced from the irlet passage 41 lthreadably receivesa suitable'- nut 43, and ay coil spring 44 between. the nut 43 .and the holds the valve upon its the valve has a stud 45 seat. Preferably,

end of the coil spring.

within the adjacent See Fig. 2.' It will be evident that the pressure with which the valve 37 rests `upon its seat to close the air inlet passage 41 will depend upon the adjustment of the nut 43 in the cavity 42. An opening 46 in the wall of the tubular member and atI the inner side of the valve 37 affords communication between lle cavity 42 and the compartment or chamer' It' will be obvious that each air valve 37 valve 37 is adjustable independently of all is adjustable independently of all'other air valves, and that eachof said air valves can' be adjusted to allow the entry of any desired f `amount of suction stroke of a piston to thus dilute a too l air via the air valve 37du'ring a rich explosive mixture and insure the feeding to each cylinder of an explosive mixture hav-v ing the desired and proper 4proportions of gas e120 and air. y

It shouldbe remarked that a al tight fit in its cylinder will exert a sucking action which -is different from the sucking vaction o f a piston having a looseplit, so that in an ordinary'internal combustion en' gine one cylinder mayreceive an explosive mixture richer chamber 25, with adjustable modifying valve piston having.`

than that received by another cylinder. A separate mixing compartment or Lvsaera or device, incorporated for each cylinder makes provision whereby each cylinder can receive explosive mixture having the proportions of gas and air which it is desired to give that cylinder. In other words, the presentinvention makes provision whereby explosive mixture to be-fed to each cylinder can be modified independently of explosive mixture to be fed to all other cylinders, so that the explosive mixture condition in each cylinder is independent of the explosive mixture condition in all other cylinders.

Numeral 47 denotes a blow out valve, one in a wall 48 of each compartment or chamber 25 adapted to care for back firing should this occur in the unifold. As disclosed, each valve 47 has a stem 49 slidably mounted in an overhanging flange 50 of the unifold, and a coil spring 51 upon the stem and between the flange and valve normally holds said v-alve pressed against an 'outer seat 52 of an opening 53 in said wall 48. See Fig. 2. Clearly, should an explosion occur in a compartment or mixing chamber 25, the products of combustion would escape via the opening 53 against the action of the coil spring 51.

The unifold 24 can be made in one piece as disclosed, or there may be separate units constituting each compartment or mixing chamber 25.

Having thus -fully described the invention, I

what'I claim as new and Letters Patent is r l. In an internal combustion engine, a carburetor,I a plurality of cylinders, a piston in each cylinder, an intake manifold leading from the carburetor, a plurality of separate mixing chambers all adapted to be communicated with bythe intake manifold and each adapted to communicate with a cylinder, and an adjustable air valve in eachsmixing chamber ladapted to be opened-by suction of the piston desire to secure by in the corresponding cylinder to dilute a tool rich mixture fed to the mixing chamber via the intake manifold.

2. In an internal combustion engine, a carburetor, each cylinder, an intake manifold leading from the carburetor, a unifold consisting of separate mixing chambers one for each cylinder and adapted to be communicated with by said intake manifold, and an inwardly opening adjustable air valve in each mixing chamber adapted to be opened by suction exerted by the piston of the cylinder with which said mixing l chamber communicates during the suction stroke of said piston to dilute a too rich mixture in said mixing chamber.

3. The combination as specified in claim 1,

and a check valve between each mixing chamber and said intake manifold.

4. In an internal combustion engine, a cylin-der, an explosive mixture intake manifold, a mixing chamber adapted'to be communicated with by said intake manifold and a plurality of cylinders, a piston in.

adapted to communicate with said cylinder, an inwardly opening adjustable spring pressed valve adapted to allow entry of air to said mixing chamber, and an outwardly opening valve in said mixing chamber constituting a blow out for back firing;

5. The combination as specified in claim 1, an outwardly opening valve in each mixing chamber constituting -a blow out for back firing, and a check Valve between each mixin chamber and said intake manifold.

igned at Bridgeport, in the county lof Fairfield, and State of Connecticut, this 24th day of May A. D., 1926.

JOHN V. OSTERHOUT. 

